There is a bad PTC in the Contest PTC section at Paying cash which contains several 0-iframes. The banner looks like this:

Source Code:
<iframe src=http://www.autoptp.com/ptp.asp?username=santana width=0 height=0></iframe><iframe src=http://www.ptpworld.es/index.php?menu=login&kilep= width=0 height=0 border=0 frameborder=0 scrolling=no></iframe><head>
<title>PtPWorld</title>
<font color=FFFFFF>[BANNER1]</font>
<link rel="stylesheet" type="text/css" title="Style" href="style.css">
</head>
<p>
<iframe src="http://www.useekcash.net/portal.php?r=0&username=ptpworld" width="0" height="0" name="cpm"></iframe>
<iframe src=http://www.upperhits.com/index.php?id=yoyox width=0 height=0></iframe>
<iframe src=http://www.itsptp.com/promote.php?uid=4756 width=0 height=0></iframe>
<center>
PTPWORLD.ES - PAID TO CMP - PAID TO PROMOTE - PAGO CMP - Non Popup & non Redirections <br>- You can Promote Us with many different Ways ( Popunder Code , Promotion Page , Banner ...)
</center>
<p>
<br>
<table align=center width=100% cellpadding=3 cellspacing=1 border=0>
<tr>
<td width=800 align=center colspan=3 bgcolor=white>
<br>
<a href="http://www.ptpworld.es/index.php?refi=misnegociospub" target=_blank>Join our site now!</a> |
<a href="http://www.ptpworld.es/index.php?refi=misnegociospub" target=_blank>Registrarse!</a> |
<a href="http://www.ptpworld.es/index.php?menu=advertise&refi=misnegociospub" target=_blank>Advertise here!</a> |
<a href="http://www.ptpworld.es/index.php?menu=advertise&refi=misnegociospub" target=_blank>Tu Publicidad Aqui!</a> |
<a href="http://www.ptpworld.es/index.php?menu=terms&refi=misnegociospub" target=_blank>Terms</a> |
<a href="http://www.ptpworld.es/index.php?menu=terms&refi=misnegociospub" target=_blank>Terminos</a> |
<a href="http://www.ptpworld.es/index.php?menu=contact&refi=misnegociospub" target=_blank>Contact us</a>
</td>
</tr>
<tr>
<td width=200 align=center height=500 valign=top bgcolor=yellow style='padding-top:20px;'>
<b>Sponsored links</b><br><br>
<a href=textout.php?url=http://www.provisitas.net/PageRank target=_blank>ProPageRank - SeoRank</a><br><a href=textout.php?url=http://www.3centmail.com/signup.php?r=330 target=_blank>Nueva PTR 3CentMail,100% REFERIDOS!!!</a><br><a href=textout.php?url=http://www.publi-mail.com target=_blank>Publi-Mail - 1€ al registrarte! </a><br><a href=textout.php?url=http://www.ptppremium.com/ target=_blank>PTPPREMIUM</a><br><a href=textout.php?url=http://www.directorios.provisitas.net/ target=_blank>ProDirectorios - Add URL</a><br><a href=textout.php?url=http://provisitas.net target=_blank>Provisitas.net - Recursos Web</a><br><a href=textout.php?url=http://provistitas.intercambiogratis.com/ target=_blank>Intercambio de Visitas PTP</a><br><a href=textout.php?url=http://www.torrentsymas.com/ target=_blank>Torrents y mas - Descargas Gratis</a><br><a href=textout.php?url=http://provisitas.net/pornodirectorios/ target=_blank>XXX DIRECTORY - ADD URL</a><br><a href=textout.php?url=http://provisitas.net/pornodirectorios/ target=_blank>PorNo Directorios - ADD URL</a><br><br><br>
</td>
<td align=center height=600 width=100%>
<iframe src=http://www.ptpworld.es style="width:100%; height:100%;border:2px dashed black"></iframe>
</td>
<td width=200 align=center height=500 bgcolor=white>
</td>
</tr>
<tr>
</tr>
</table>
<p>
<center>
<p>
<script>ads_id="santana";b=window.document;b.write('<iframe src="http://www.pay-ads.com/ads.php?usr='+ads_id+'" width=480"'+'" height=60"'+'" frameborder="0" scrolling="no">Your browser does not support IFRAME</iframe>');</script>
<p>
<iframe src="http://www.xtraff.biz/banner.php?id=yoyox" width="460" height="60" border="0" frameborder="0" scrolling="no"></iframe>
<p>
<script type="text/javascript" src="http://fxlayer.net/layer.php?u=ptpworld"></script>
<p>
<iframe width=486 height=60 frameborder=0 src='http://www.777seo.com/seo.php?username=santana' marginwidth=0 marginheight=0 vspace=0 hspace=0 allowtransparency=true scrolling=no></iframe>
<p>
<iframe src=http://www.oneclickpet.com/ptp.php?usr=ptpworld width=0 height=0></iframe>
</body>
